<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <input type="text" , id="message">
    <button id="submit">提交</button>

    <script>
        // 创建websocket实例
        let websocket = new WebSocket("ws://127.0.0.1:8080/test");
        //需要给实例挂载一些回调函数
        websocket.onopen = function () {
            console.log("连接建立");
        }
        websocket.onmessage = function (e) {
            console.log("收到消息: " + e.data);
        }
        websocket.onerror = function () {
            console.log("连接异常");
        }
        websocket.onclose = function () {
            console.log("连接关闭");
        }

        //实现点击按钮后通过websocket发送请求
        let input = document.querySelector('#message');
        let button = document.querySelector('#submit');
        button.onclick = function () {
            console.log("发送消息" + input.value);
            websocket.send(input.value);
        }
    </script>
</body>

</html>